(Upper frame) After drilling ¾-inch holes in the drum sides, Mike inserts the tapered rubber fingers from the outside, and pulls them until their grooved bases interlock with the plastic edges of the holes. (Lower frame) The steel bottom plate (“featherplate”) has also been inset with the plucker fingers, and the shaft set in place. (Note the small gap between the steel disk and the bottom edge of the plastic drum. Kimball stresses in his book how critical the size of this gap is, and that it must not be made too wide.) Gravity and centrifugal force will propel the flying feathers down and out through that gap. (Original photos by Mike Rininger)